Evidence of tetragonal nanodomains in the high-pressure polymorph of BaTiO3

L. Ehm; L. A. Borkowski; J. B. Parise; S. Ghose; Z. Chen

doi:10.1063/1.3535611

Evidence of tetragonal nanodomains in the high-pressure polymorph of BaTiO₃

L. Ehm
, L. A. Borkowski
, J. B. Parise
, S. Ghose
, Z. Chen

Geosciences

Stony Brook University
Brookhaven National Laboratory

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The pressure induced P4mm→Pm3̄m phase transition in BaTiO ₃ perovskite was investigated by x-ray total scattering. The evolution of the structure was analyzed by fitting pair distribution functions over a pressure range from ambient pressure up to 6.85(7) GPa. Evidence for the existence of tetragonal ferroelectric nanodomains at high pressure was found. The average size of the nanodomains in the high-pressure phase decreases with increasing pressure. Extrapolation of the domain size to pressures higher than studied experimentally suggests a disappearance of the ferroelectric domains at about 9.3(5) GPa and a cubic symmetry of BaTiO₃ high-pressure phase.

Original language	English
Article number	021901
Journal	Applied Physics Letters
Volume	98
Issue number	2
DOIs	https://doi.org/10.1063/1.3535611
State	Published - Jan 10 2011

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title = "Evidence of tetragonal nanodomains in the high-pressure polymorph of BaTiO3",

abstract = "The pressure induced P4mm→Pm{\=3}m phase transition in BaTiO 3 perovskite was investigated by x-ray total scattering. The evolution of the structure was analyzed by fitting pair distribution functions over a pressure range from ambient pressure up to 6.85(7) GPa. Evidence for the existence of tetragonal ferroelectric nanodomains at high pressure was found. The average size of the nanodomains in the high-pressure phase decreases with increasing pressure. Extrapolation of the domain size to pressures higher than studied experimentally suggests a disappearance of the ferroelectric domains at about 9.3(5) GPa and a cubic symmetry of BaTiO3 high-pressure phase.",

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T1 - Evidence of tetragonal nanodomains in the high-pressure polymorph of BaTiO3

AU - Ehm, L.

AU - Borkowski, L. A.

AU - Parise, J. B.

AU - Ghose, S.

AU - Chen, Z.

PY - 2011/1/10

Y1 - 2011/1/10

N2 - The pressure induced P4mm→Pm3̄m phase transition in BaTiO 3 perovskite was investigated by x-ray total scattering. The evolution of the structure was analyzed by fitting pair distribution functions over a pressure range from ambient pressure up to 6.85(7) GPa. Evidence for the existence of tetragonal ferroelectric nanodomains at high pressure was found. The average size of the nanodomains in the high-pressure phase decreases with increasing pressure. Extrapolation of the domain size to pressures higher than studied experimentally suggests a disappearance of the ferroelectric domains at about 9.3(5) GPa and a cubic symmetry of BaTiO3 high-pressure phase.

AB - The pressure induced P4mm→Pm3̄m phase transition in BaTiO 3 perovskite was investigated by x-ray total scattering. The evolution of the structure was analyzed by fitting pair distribution functions over a pressure range from ambient pressure up to 6.85(7) GPa. Evidence for the existence of tetragonal ferroelectric nanodomains at high pressure was found. The average size of the nanodomains in the high-pressure phase decreases with increasing pressure. Extrapolation of the domain size to pressures higher than studied experimentally suggests a disappearance of the ferroelectric domains at about 9.3(5) GPa and a cubic symmetry of BaTiO3 high-pressure phase.

UR - https://www.scopus.com/pages/publications/78751538261

U2 - 10.1063/1.3535611

DO - 10.1063/1.3535611

M3 - Article

AN - SCOPUS:78751538261

SN - 0003-6951

VL - 98

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 021901

ER -

Evidence of tetragonal nanodomains in the high-pressure polymorph of BaTiO₃

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